(5240 MHz) with channel mode HT40-.
In most European countries, the default channel and mode is 136 (5680 MHz) and HT40-, and if a second
radio is present, its default channel and mode is 100 (5500 MHz) and HT40+. In other countries the default
channels may differ based on local regulations.
Note
Note
If the default channels are not available, the default channel will instead be the first valid channel (in
If the default channels are not available, the default channel will instead be the first valid channel (in
order of channel number) with the largest bandwidth (up to 20 MHz) that does not conflict with other
order of channel number) with the largest bandwidth (up to 20 MHz) that does not conflict with other
radios. If that fails, meshing will be disabled on that radio.
radios. If that fails, meshing will be disabled on that radio.
Some 5 GHz channels support HT40 mode. In HT40 mode, the radio binds two standard 20 MHz channels
to obtain a wider bandwidth 40 MHz channel. The + or - designates whether the second channel is above
or below the base channel. Plus (+) indicates that the additional 20 MHz occurs above (at a higher fre-
quency than) the first 20 MHz; minus (-) indicates that the additional 20 MHz occurs below (at a lower fre-
quency than) the first 20 MHz.
5 GHz channels support VHT 80 mode. In VHT 80 mode, the radio bonds four contiguous 20 MHz channels
to obtain a wider bandwidth 80-MHz channel. One of these 20 Mhz channels is the “control channel” for
the 80 Mhz channel.
In BC|Commander, in the BreadCrumb configuration, for wlan0 and wlan1, the Channel Number list is
used to select the channel number and center frequency for the 20 MHz control channel for the 80 MHz
channel.
The following six 80 Mhz channels are available:
The first 80 Mhz channel bonds channels 36+40+44+48.
The second 80 Mhz channel bonds channels 52+56+60+64.
The third 80 Mhz channel bonds channels 100+104+108+112.
The fourth 80 Mhz channel bonds channels 116+120+124+128.
The fih 80 Mhz channel bonds channels 132+136+140+144.
The sixth 80 Mhz channel bonds channels 149+153+157+161.
To determine which channels support VHT 80 mode, refer to the latest channel plan at the following Web
page:
https://secure.rajant.com/staticFiles/latest/channelPlans/FE1-2255B.html.
Note
Note
The 802.11ac frequency noted is the center frequency of the base 20 MHz channel. This is di
fferent from
The 802.11ac frequency noted is the center frequency of the base 20 MHz channel. This is different from
802.11a turbo mode where the frequency was the center of a single 40 MHz wide channel. HT40 opera-
802.11a turbo mode where the frequency was the center of a single 40 MHz wide channel. HT40 opera-
tion (+ or -) is compatible with 802.11a 20 MHz and 802.11ac HT20 modes. HT40 operation is NOT com-
tion (+ or -) is compatible with 802.11a 20 MHz and 802.11ac HT20 modes. HT40 operation is NOT com-
patible with 802.11a turbo mode.
patible with 802.11a turbo mode.
Caution
Caution
Most 5 GHz antennas support only a subset of the 802.11ac 5 GHz frequency channels at which the
Most 5 GHz antennas support only a subset of the 802.11ac 5 GHz frequency channels at which the
Rajant radio is capable of operating. Before changing the channel of a 5 GHz radio, verify that the chan-
Rajant radio is capable of operating. Before changing the channel of a 5 GHz radio, verify that the chan-
nel is supported by the connected antenna.
nel is supported by the connected antenna.
IMPORTANT: Regarding indoor-only frequencies
IMPORTANT: Regarding indoor-only frequencies
In regions where radio frequencies are regulated by ETSI (CE), the frequency range 5170-5350 MHz is re-
In regions where radio frequencies are regulated by ETSI (CE), the frequency range 5170-5350 MHz is re-
stricted to indoor use only. Check local regulations before using these channels.
stricted to indoor use only. Check local regulations before using these channels.
IMPORTANT
IMPORTANT
In many regions where radio frequencies are regulated by ETSI (CE), a license is required to use chan-
In many regions where radio frequencies are regulated by ETSI (CE), a license is required to use chan-
nels in the frequency range 5735-5835 MHz (on models that o
ffer these channels). Check local regula-
nels in the frequency range 5735-5835 MHz (on models that offer these channels). Check local regula-
tions before using these channels.
tions before using these channels.
IMPORTANT
IMPORTANT
In Canada, a license is required to use channels in the frequency range 5150-5250 MHz (on models that
In Canada, a license is required to use channels in the frequency range 5150-5250 MHz (on models that
o
ffer these channels). The license may restrict transmit power. Licensing information may be found at
offer these channels). The license may restrict transmit power. Licensing information may be found at
http://www.ic.gc.ca/eic/site/smt-gst.nsf/eng/sf11294.html
http://www.ic.gc.ca/eic/site/smt-gst.nsf/eng/sf11294.html
.
.
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